A 5600 kg mass car is taking a turn at 72 m/s. If the frictional force here is 44,000N, what is the radius of curvature of the turn? Up where the ISS (International Space Station) orbits at 387 km, even though they are weightless there still is an acceleration due to gravity. Calculate its value and what it is in respect to 8g at the Earth’s surface. Going back to the previous question, how long does it take the ISS to orbit? (You must calculate this and not just look it up!) If a person on a 35.0 m diameter Ferris wheel feels 30% heavier at the bottom of the wheel, how fast is it going around? A large box with mass 45 kg is being pushed up a ramp at a 32o incline at a constant velocity by a man pushing parallel to the incline for 7.80 m. If the coefficient of kinetic friction is 0.25, what is: The force the man is pushing on the box. The work done by the man on the box. The force of friction. The work done by the friction force. A spring with negligible mass is suspended next to a ruler such that the end of the spring at equilibrium is at the 0 cm mark on the ruler. If a 3.0 kg mass is suspended from the spring and it stretches so that the end of the spring is at the 17 cm mark, what is the spring constant k? A softball having a mass of 0.45 kg is pitched horizontally at spring with spring constant 78 N/m. If the ball hits the spring and compresses it 56 cm, how fast was the softball moving initially? A roller coaster is a height of 120 m and has a series of dips. What is he velocity at the bottom (assuming this is 120 m below the top) and what is the velocity at a bump that is 75 m above the ground? Please show all work
Two boxes A and B are connected by a lightweight cord (disregard the mass of the cord). Box A has a mass of 5.0 kg and rests on a horizontal table. The coefficient of kinetic friction between the box and the table is 0.20. Box B has a mass of 2.0 kg and hangs over the table via a frictionless, massless pulley. Assume the cord does not stretch (i.e., the boxes have the same acceleration). What is the acceleration of the boxes? What is the tension in the cord that connects the boxes?
A pelican flying along a horizontal path drops a fish from a height of 5.4m. The fish travels 8.0m horizontally before it hits the water below. What is the pelicans speed.
Part of the wonder of blowing soap bubbles is watching the different colors reflect. If part of the soap bubble looks yellow in sunlight, what color is being canceled by wave interference? Why? 100 WORD RESPONSE
15. You are holding a 6-kg dumbbell straight out at arm's length. Assuming your arm is 0.70 m long, what torque is the dumbbell exerting on your shoulder? 16. A beam is balanced on a stand. If you place a 50-kg mass on one side at a distance of 2.0 m from the center, how far from the center would you place a 25-kg mass on the other side so that the system balances?
you will se 10 assignments I just want you to do the second one on file. IF you want to do HW 2 on the attached file shake hands. Due on 11:57 PM easteren time USA thursday 1/29
MULTISIM Introduction This experiment explores the uses of JFET as AC signal amplifiers. It also describes techniques for measuring the input and output impedance of circuits. Remember that your lab report will need to include your measurements, calculations, screenshots, etc. as indicated at the end of this outline. Procedure 1. Common Source Amplifier 1.1 Build the common source amplifier shown in Figure 8.1 Figure 8. 1: Common source amplifier 1.2 Using the oscilloscope, measure the voltage gain of the amplifier defined as Av = Vout/Vin. 2. Measurement of Input impedance In this section we will learn a very useful technique to measure the input impedance of any circuit. This technique is based on placing a known resistor in series with the input of the circuit and measuring the voltage drop across the new resistor. This technique can also be used in live circuits and not just simulations. Figure 8. 2: Circuit to measure input impedance 2.1 Build the circuit shown in Figure 8.2 You will notice that this is the same circuit used in Figure 8.2 with the extra R4 resistor added to the input. 2.2 Measure with the oscilloscope the voltage at node V1 and the voltage at node V4. 2.3 Calculate input impedance as follows: 3. Measurement of output impedance The following technique can be used to measure the output impedance of a circuit. In practical circuits, the best value of the load resistor must be selected by trial and error. 3.1 Measure Vout as shown in the circuit from Figure 8.1. We will name this voltage Vout 3.2 Connect a load resistor of 1 k? at the output of the same circuit. Measure the voltage across the load. We will call this voltage Vload 3.3 Calculate output impedance as: (in the case of using a different value for the load resistor, change the 10 k? value in the equation to the appropriate value of resistor used). Laboratory Report Create a laboratory report using Word or another word processing software that contains at least these elements: - Introduction: what is the purpose of this laboratory experiment? - Results for each section : Measured and calculated values, calculations, etc. following the outline. Include screenshots for the circuits and waveforms as necessary -- You can press Alt + Print_Screen inside Multisim or if using Windows 7, you can use the "Snipping tool". Either way, you can paste these figures into your Word processor. - Conclusion : What area(s) you had difficulties with in the lab; what did you lean in this experiment; how it applies to your coursework and any other comments.
